Dishonored 2
50 Achievements
40-50h
Clockwork Collector
Obtain numbered plates for 3 Clockwork Soldiers
9.8%
How to unlock the Clockwork Collector achievement in Dishonored 2 - Definitive Guide
One of the easiest ways of disabling a clockwork soldier, at least from what I found was to use Stun Mines. Although bullets, grenades etc will work, they didn't feel as effective. Note that the clockwork soldiers can see behind and in front of them, making stealth a bit harder. Also note that if you manage to remove the head, the soldier will not distinguish between friend and foe and will then run at the city guard in an attempt to murder them. This is another good way of riding the soldiers and guard in one swoop, allowing you chance to pick up the Numbered plates.
The soldiers are harder to take out than a normal enemy. You can't really sneak up behind them without them detecting you. You can drop assassinate them with some success, but even that won't take one out (the first time you drop on one, it will remove their head, which eliminates their ability to detect you, if not actually killing them). I believe you have to hit them with the equivalent of two or three killing blows to completely eliminate them. Also, when they are about to die they explode, so you need to get away to avoid potentially fatal damage if you're close to death yourself.
It is highly recommended to get this done in Mission 4, The Clockwork Mansion. Moreover, this achievement should be paired with a lethal High Chaos playthrough.
Once you arrive at the Clockwork Mansion, head into the parlor to the right of the foyer and pull the lever on the right-hand side of the room. This will spawn in a single Clockwork Solider and reconfigure the layout of the room, granting access to the rest of the mansion.
From here you will want to Blink/Far Reach onto balcony above the Soldier and wait until the machine is within Drop Assassination range. Drop onto the Solider, tap to remove its head, then set yourself back into position. Attack the Solider one more time and when it's dismembered and dead, you can find a plaque among the debris. Do this twice more over the course of this mission and the achievement will unlock after picking up the third plaque.
NOTE: There are several other ways to eliminate Clockwork Soldiers and obtain their plaques: you can instantly kill them with a stun mine; you can shoot their heads off with a crossbow, then perform a drop assassination; you can attack their glowing limbs with your sword until they overheat and explode.
It is highly recommended to get this done in Mission 4, The Clockwork Mansion. Moreover, this achievement should be paired with a lethal High Chaos playthrough.
Once you arrive at the Clockwork Mansion, head into the parlor to the right of the foyer and pull the lever on the right-hand side of the room. This will spawn in a single Clockwork Solider and reconfigure the layout of the room, granting access to the rest of the mansion.
From here you will want to Blink/Far Reach onto balcony above the Soldier and wait until the machine is within Drop Assassination range. Drop onto the Solider, tap to remove its head, then set yourself back into position. Attack the Solider one more time and when it's dismembered and dead, you can find a plaque among the debris. Do this twice more over the course of this mission and the achievement will unlock after picking up the third plaque.
NOTE: There are several other ways to eliminate Clockwork Soldiers and obtain their plaques: you can instantly kill them with a stun mine; you can shoot their heads off with a crossbow, then perform a drop assassination; you can attack their glowing limbs with your sword until they overheat and explode.